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gstreamer/subprojects/gstreamer-vaapi/gst-libs/gst/vaapi/gstvaapidecoder_vc1.c

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/*
* gstvaapidecoder_vc1.c - VC-1 decoder
*
* Copyright (C) 2011-2013 Intel Corporation
* Author: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2.1
* of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
/**
* SECTION:gstvaapidecoder_vc1
* @short_description: VC-1 decoder
*/
#include "sysdeps.h"
#include <gst/codecparsers/gstvc1parser.h>
#include "gstvaapidecoder_vc1.h"
#include "gstvaapidecoder_objects.h"
#include "gstvaapidecoder_dpb.h"
#include "gstvaapidecoder_unit.h"
#include "gstvaapidecoder_priv.h"
#include "gstvaapidisplay_priv.h"
#define DEBUG 1
#include "gstvaapidebug.h"
#define GST_VAAPI_DECODER_VC1_CAST(decoder) \
((GstVaapiDecoderVC1 *)(decoder))
typedef struct _GstVaapiDecoderVC1Private GstVaapiDecoderVC1Private;
typedef struct _GstVaapiDecoderVC1Class GstVaapiDecoderVC1Class;
/**
* GstVaapiDecoderVC1:
*
* A decoder based on VC1.
*/
struct _GstVaapiDecoderVC1Private
{
GstVaapiProfile profile;
guint width;
guint height;
GstVC1SeqHdr seq_hdr;
GstVC1EntryPointHdr entrypoint_hdr;
GstVC1FrameHdr frame_hdr;
GstVC1BitPlanes *bitplanes;
GstVaapiPicture *current_picture;
GstVaapiPicture *last_non_b_picture;
GstVaapiDpb *dpb;
gint32 next_poc;
guint8 *rbdu_buffer;
guint8 rndctrl;
guint rbdu_buffer_size;
guint is_opened:1;
guint has_codec_data:1;
guint has_entrypoint:1;
guint size_changed:1;
guint profile_changed:1;
guint closed_entry:1;
guint broken_link:1;
};
/**
* GstVaapiDecoderVC1:
*
* A decoder based on VC1.
*/
struct _GstVaapiDecoderVC1
{
/*< private > */
GstVaapiDecoder parent_instance;
GstVaapiDecoderVC1Private priv;
};
/**
* GstVaapiDecoderVC1Class:
*
* A decoder class based on VC1.
*/
struct _GstVaapiDecoderVC1Class
{
/*< private > */
GstVaapiDecoderClass parent_class;
};
G_DEFINE_TYPE (GstVaapiDecoderVC1, gst_vaapi_decoder_vc1,
GST_TYPE_VAAPI_DECODER);
static GstVaapiDecoderStatus
get_status (GstVC1ParserResult result)
{
GstVaapiDecoderStatus status;
switch (result) {
case GST_VC1_PARSER_OK:
status = GST_VAAPI_DECODER_STATUS_SUCCESS;
break;
case GST_VC1_PARSER_NO_BDU_END:
status = GST_VAAPI_DECODER_STATUS_ERROR_NO_DATA;
break;
case GST_VC1_PARSER_ERROR:
status = GST_VAAPI_DECODER_STATUS_ERROR_BITSTREAM_PARSER;
break;
default:
status = GST_VAAPI_DECODER_STATUS_ERROR_UNKNOWN;
break;
}
return status;
}
static void
gst_vaapi_decoder_vc1_close (GstVaapiDecoderVC1 * decoder)
{
GstVaapiDecoderVC1Private *const priv = &decoder->priv;
gst_vaapi_picture_replace (&priv->last_non_b_picture, NULL);
gst_vaapi_picture_replace (&priv->current_picture, NULL);
gst_vaapi_dpb_replace (&priv->dpb, NULL);
if (priv->bitplanes) {
gst_vc1_bitplanes_free (priv->bitplanes);
priv->bitplanes = NULL;
}
priv->is_opened = FALSE;
}
static gboolean
gst_vaapi_decoder_vc1_open (GstVaapiDecoderVC1 * decoder)
{
GstVaapiDecoderVC1Private *const priv = &decoder->priv;
gst_vaapi_decoder_vc1_close (decoder);
priv->dpb = gst_vaapi_dpb_new (2);
if (!priv->dpb)
return FALSE;
priv->bitplanes = gst_vc1_bitplanes_new ();
if (!priv->bitplanes)
return FALSE;
memset (&priv->seq_hdr, 0, sizeof (GstVC1SeqHdr));
memset (&priv->entrypoint_hdr, 0, sizeof (GstVC1EntryPointHdr));
memset (&priv->frame_hdr, 0, sizeof (GstVC1FrameHdr));
return TRUE;
}
static void
gst_vaapi_decoder_vc1_destroy (GstVaapiDecoder * base_decoder)
{
GstVaapiDecoderVC1 *const decoder = GST_VAAPI_DECODER_VC1_CAST (base_decoder);
GstVaapiDecoderVC1Private *const priv = &decoder->priv;
gst_vaapi_decoder_vc1_close (decoder);
if (priv->rbdu_buffer) {
g_clear_pointer (&priv->rbdu_buffer, g_free);
priv->rbdu_buffer_size = 0;
}
}
static gboolean
gst_vaapi_decoder_vc1_create (GstVaapiDecoder * base_decoder)
{
GstVaapiDecoderVC1 *const decoder = GST_VAAPI_DECODER_VC1_CAST (base_decoder);
GstVaapiDecoderVC1Private *const priv = &decoder->priv;
priv->has_codec_data = priv->has_entrypoint =
priv->size_changed = priv->profile_changed =
priv->closed_entry = priv->broken_link = FALSE;
priv->profile = GST_VAAPI_PROFILE_UNKNOWN;
priv->rndctrl = 0;
priv->width = priv->height = 0;
return TRUE;
}
static GstVaapiDecoderStatus
gst_vaapi_decoder_vc1_reset (GstVaapiDecoder * base_decoder)
{
gst_vaapi_decoder_vc1_destroy (base_decoder);
gst_vaapi_decoder_vc1_create (base_decoder);
return GST_VAAPI_DECODER_STATUS_SUCCESS;
}
static GstVaapiDecoderStatus
ensure_context (GstVaapiDecoderVC1 * decoder)
{
GstVaapiDecoderVC1Private *const priv = &decoder->priv;
GstVaapiProfile profiles[2];
GstVaapiEntrypoint entrypoint = GST_VAAPI_ENTRYPOINT_VLD;
guint i, n_profiles = 0;
gboolean reset_context = FALSE;
if (priv->profile_changed) {
GST_DEBUG ("profile changed");
priv->profile_changed = FALSE;
reset_context = TRUE;
profiles[n_profiles++] = priv->profile;
if (priv->profile == GST_VAAPI_PROFILE_VC1_SIMPLE)
profiles[n_profiles++] = GST_VAAPI_PROFILE_VC1_MAIN;
for (i = 0; i < n_profiles; i++) {
if (gst_vaapi_display_has_decoder (GST_VAAPI_DECODER_DISPLAY (decoder),
profiles[i], entrypoint))
break;
}
if (i == n_profiles)
return GST_VAAPI_DECODER_STATUS_ERROR_UNSUPPORTED_PROFILE;
priv->profile = profiles[i];
}
if (priv->size_changed) {
GST_DEBUG ("size changed");
priv->size_changed = FALSE;
reset_context = TRUE;
}
if (reset_context) {
GstVaapiContextInfo info;
info.profile = priv->profile;
info.entrypoint = entrypoint;
info.chroma_type = GST_VAAPI_CHROMA_TYPE_YUV420;
info.width = priv->width;
info.height = priv->height;
info.ref_frames = 2;
reset_context =
gst_vaapi_decoder_ensure_context (GST_VAAPI_DECODER (decoder), &info);
if (!reset_context)
return GST_VAAPI_DECODER_STATUS_ERROR_UNKNOWN;
}
return GST_VAAPI_DECODER_STATUS_SUCCESS;
}
static GstVaapiDecoderStatus
decode_current_picture (GstVaapiDecoderVC1 * decoder)
{
GstVaapiDecoderVC1Private *const priv = &decoder->priv;
GstVaapiPicture *const picture = priv->current_picture;
if (!picture)
return GST_VAAPI_DECODER_STATUS_SUCCESS;
if (!gst_vaapi_picture_decode (picture))
goto error;
if (GST_VAAPI_PICTURE_IS_COMPLETE (picture)) {
if (!gst_vaapi_dpb_add (priv->dpb, picture))
goto error;
gst_vaapi_picture_replace (&priv->current_picture, NULL);
}
return GST_VAAPI_DECODER_STATUS_SUCCESS;
/* ERRORS */
error:
{
/* XXX: fix for cases where first field failed to be decoded */
gst_vaapi_picture_replace (&priv->current_picture, NULL);
return GST_VAAPI_DECODER_STATUS_ERROR_UNKNOWN;
}
}
static GstVaapiDecoderStatus
decode_sequence (GstVaapiDecoderVC1 * decoder, GstVC1BDU * rbdu,
GstVC1BDU * ebdu)
{
GstVaapiDecoder *const base_decoder = GST_VAAPI_DECODER (decoder);
GstVaapiDecoderVC1Private *const priv = &decoder->priv;
GstVC1SeqHdr *const seq_hdr = &priv->seq_hdr;
GstVC1AdvancedSeqHdr *const adv_hdr = &seq_hdr->advanced;
GstVC1SeqStructC *const structc = &seq_hdr->struct_c;
GstVC1ParserResult result;
GstVaapiProfile profile;
guint width, height, fps_n, fps_d, par_n, par_d;
result = gst_vc1_parse_sequence_header (rbdu->data + rbdu->offset,
rbdu->size, seq_hdr);
if (result != GST_VC1_PARSER_OK) {
GST_ERROR ("failed to parse sequence layer");
return get_status (result);
}
priv->has_entrypoint = FALSE;
/* Reset POC */
if (priv->last_non_b_picture) {
if (priv->last_non_b_picture->poc == priv->next_poc)
priv->next_poc++;
gst_vaapi_picture_replace (&priv->last_non_b_picture, NULL);
}
/* Validate profile */
switch (seq_hdr->profile) {
case GST_VC1_PROFILE_SIMPLE:
case GST_VC1_PROFILE_MAIN:
case GST_VC1_PROFILE_ADVANCED:
break;
default:
GST_ERROR ("unsupported profile %d", seq_hdr->profile);
return GST_VAAPI_DECODER_STATUS_ERROR_UNSUPPORTED_PROFILE;
}
fps_n = 0;
fps_d = 0;
par_n = 0;
par_d = 0;
switch (seq_hdr->profile) {
case GST_VC1_PROFILE_SIMPLE:
case GST_VC1_PROFILE_MAIN:
if (structc->wmvp) {
fps_n = structc->framerate;
fps_d = 1;
}
break;
case GST_VC1_PROFILE_ADVANCED:
fps_n = adv_hdr->fps_n;
fps_d = adv_hdr->fps_d;
par_n = adv_hdr->par_n;
par_d = adv_hdr->par_d;
break;
default:
g_assert (0 && "XXX: we already validated the profile above");
break;
}
if (fps_n && fps_d)
gst_vaapi_decoder_set_framerate (base_decoder, fps_n, fps_d);
if (par_n > 0 && par_d > 0)
gst_vaapi_decoder_set_pixel_aspect_ratio (base_decoder, par_n, par_d);
width = 0;
height = 0;
switch (seq_hdr->profile) {
case GST_VC1_PROFILE_SIMPLE:
case GST_VC1_PROFILE_MAIN:
width = seq_hdr->struct_c.coded_width;
height = seq_hdr->struct_c.coded_height;
break;
case GST_VC1_PROFILE_ADVANCED:
width = seq_hdr->advanced.max_coded_width;
height = seq_hdr->advanced.max_coded_height;
break;
default:
g_assert (0 && "XXX: we already validated the profile above");
break;
}
if (priv->width != width) {
priv->width = width;
priv->size_changed = TRUE;
}
if (priv->height != height) {
priv->height = height;
priv->size_changed = TRUE;
}
profile = GST_VAAPI_PROFILE_UNKNOWN;
switch (seq_hdr->profile) {
case GST_VC1_PROFILE_SIMPLE:
profile = GST_VAAPI_PROFILE_VC1_SIMPLE;
break;
case GST_VC1_PROFILE_MAIN:
profile = GST_VAAPI_PROFILE_VC1_MAIN;
break;
case GST_VC1_PROFILE_ADVANCED:
profile = GST_VAAPI_PROFILE_VC1_ADVANCED;
break;
default:
g_assert (0 && "XXX: we already validated the profile above");
break;
}
if (priv->profile != profile) {
priv->profile = profile;
priv->profile_changed = TRUE;
}
return GST_VAAPI_DECODER_STATUS_SUCCESS;
}
static GstVaapiDecoderStatus
decode_sequence_end (GstVaapiDecoderVC1 * decoder)
{
GstVaapiDecoderVC1Private *const priv = &decoder->priv;
GstVaapiDecoderStatus status;
status = decode_current_picture (decoder);
if (status != GST_VAAPI_DECODER_STATUS_SUCCESS)
return status;
gst_vaapi_dpb_flush (priv->dpb);
return GST_VAAPI_DECODER_STATUS_SUCCESS;
}
static GstVaapiDecoderStatus
decode_entry_point (GstVaapiDecoderVC1 * decoder, GstVC1BDU * rbdu,
GstVC1BDU * ebdu)
{
GstVaapiDecoderVC1Private *const priv = &decoder->priv;
GstVC1SeqHdr *const seq_hdr = &priv->seq_hdr;
GstVC1EntryPointHdr *const entrypoint_hdr = &priv->entrypoint_hdr;
GstVC1ParserResult result;
result = gst_vc1_parse_entry_point_header (rbdu->data + rbdu->offset,
rbdu->size, entrypoint_hdr, seq_hdr);
if (result != GST_VC1_PARSER_OK) {
GST_ERROR ("failed to parse entrypoint layer");
return get_status (result);
}
if (entrypoint_hdr->coded_size_flag) {
priv->width = entrypoint_hdr->coded_width;
priv->height = entrypoint_hdr->coded_height;
priv->size_changed = TRUE;
}
priv->has_entrypoint = TRUE;
priv->closed_entry = entrypoint_hdr->closed_entry;
priv->broken_link = entrypoint_hdr->broken_link;
return GST_VAAPI_DECODER_STATUS_SUCCESS;
}
/* Reconstruct bitstream PTYPE (7.1.1.4, index into Table-35) */
static guint
get_PTYPE (guint ptype)
{
switch (ptype) {
case GST_VC1_PICTURE_TYPE_I:
return 0;
case GST_VC1_PICTURE_TYPE_P:
return 1;
case GST_VC1_PICTURE_TYPE_B:
return 2;
case GST_VC1_PICTURE_TYPE_BI:
return 3;
}
return 4; /* skipped P-frame */
}
/* Reconstruct bitstream BFRACTION (7.1.1.14, index into Table-40) */
static guint
get_BFRACTION (guint bfraction)
{
guint i;
static const struct
{
guint16 index;
guint16 value;
}
bfraction_map[] = {
{
0, GST_VC1_BFRACTION_BASIS / 2}, {
1, GST_VC1_BFRACTION_BASIS / 3}, {
2, (GST_VC1_BFRACTION_BASIS * 2) / 3}, {
3, GST_VC1_BFRACTION_BASIS / 4}, {
4, (GST_VC1_BFRACTION_BASIS * 3) / 4}, {
5, GST_VC1_BFRACTION_BASIS / 5}, {
6, (GST_VC1_BFRACTION_BASIS * 2) / 5}, {
7, (GST_VC1_BFRACTION_BASIS * 3) / 5}, {
8, (GST_VC1_BFRACTION_BASIS * 4) / 5}, {
9, GST_VC1_BFRACTION_BASIS / 6}, {
10, (GST_VC1_BFRACTION_BASIS * 5) / 6}, {
11, GST_VC1_BFRACTION_BASIS / 7}, {
12, (GST_VC1_BFRACTION_BASIS * 2) / 7}, {
13, (GST_VC1_BFRACTION_BASIS * 3) / 7}, {
14, (GST_VC1_BFRACTION_BASIS * 4) / 7}, {
15, (GST_VC1_BFRACTION_BASIS * 5) / 7}, {
16, (GST_VC1_BFRACTION_BASIS * 6) / 7}, {
17, GST_VC1_BFRACTION_BASIS / 8}, {
18, (GST_VC1_BFRACTION_BASIS * 3) / 8}, {
19, (GST_VC1_BFRACTION_BASIS * 5) / 8}, {
20, (GST_VC1_BFRACTION_BASIS * 7) / 8}, {
21, GST_VC1_BFRACTION_RESERVED}, {
22, GST_VC1_BFRACTION_PTYPE_BI}
};
if (!bfraction)
return 0;
for (i = 0; i < G_N_ELEMENTS (bfraction_map); i++) {
if (bfraction_map[i].value == bfraction)
return bfraction_map[i].index;
}
return 21; /* RESERVED */
}
/* Translate GStreamer MV modes to VA-API */
static guint
get_VAMvModeVC1 (guint mvmode)
{
switch (mvmode) {
case GST_VC1_MVMODE_1MV_HPEL_BILINEAR:
return VAMvMode1MvHalfPelBilinear;
case GST_VC1_MVMODE_1MV:
return VAMvMode1Mv;
case GST_VC1_MVMODE_1MV_HPEL:
return VAMvMode1MvHalfPel;
case GST_VC1_MVMODE_MIXED_MV:
return VAMvModeMixedMv;
case GST_VC1_MVMODE_INTENSITY_COMP:
return VAMvModeIntensityCompensation;
}
return 0;
}
/* Reconstruct bitstream MVMODE (7.1.1.32) */
static guint
get_MVMODE (GstVC1FrameHdr * frame_hdr)
{
guint mvmode;
if (frame_hdr->profile == GST_VC1_PROFILE_ADVANCED)
mvmode = frame_hdr->pic.advanced.mvmode;
else
mvmode = frame_hdr->pic.simple.mvmode;
if (frame_hdr->ptype == GST_VC1_PICTURE_TYPE_P ||
frame_hdr->ptype == GST_VC1_PICTURE_TYPE_B)
return get_VAMvModeVC1 (mvmode);
return 0;
}
/* Reconstruct bitstream MVMODE2 (7.1.1.33) */
static guint
get_MVMODE2 (GstVC1FrameHdr * frame_hdr)
{
guint mvmode, mvmode2;
if (frame_hdr->profile == GST_VC1_PROFILE_ADVANCED) {
mvmode = frame_hdr->pic.advanced.mvmode;
mvmode2 = frame_hdr->pic.advanced.mvmode2;
} else {
mvmode = frame_hdr->pic.simple.mvmode;
mvmode2 = frame_hdr->pic.simple.mvmode2;
}
if (frame_hdr->ptype == GST_VC1_PICTURE_TYPE_P &&
mvmode == GST_VC1_MVMODE_INTENSITY_COMP)
return get_VAMvModeVC1 (mvmode2);
return 0;
}
static inline int
has_MVTYPEMB_bitplane (GstVaapiDecoderVC1 * decoder)
{
GstVaapiDecoderVC1Private *const priv = &decoder->priv;
GstVC1SeqHdr *const seq_hdr = &priv->seq_hdr;
GstVC1FrameHdr *const frame_hdr = &priv->frame_hdr;
guint mvmode, mvmode2;
if (seq_hdr->profile == GST_VC1_PROFILE_ADVANCED) {
GstVC1PicAdvanced *const pic = &frame_hdr->pic.advanced;
if (pic->mvtypemb)
return 0;
mvmode = pic->mvmode;
mvmode2 = pic->mvmode2;
} else {
GstVC1PicSimpleMain *const pic = &frame_hdr->pic.simple;
if (pic->mvtypemb)
return 0;
mvmode = pic->mvmode;
mvmode2 = pic->mvmode2;
}
return (frame_hdr->ptype == GST_VC1_PICTURE_TYPE_P &&
(mvmode == GST_VC1_MVMODE_MIXED_MV ||
(mvmode == GST_VC1_MVMODE_INTENSITY_COMP &&
mvmode2 == GST_VC1_MVMODE_MIXED_MV)));
}
static inline int
has_SKIPMB_bitplane (GstVaapiDecoderVC1 * decoder)
{
GstVaapiDecoderVC1Private *const priv = &decoder->priv;
GstVC1SeqHdr *const seq_hdr = &priv->seq_hdr;
GstVC1FrameHdr *const frame_hdr = &priv->frame_hdr;
if (seq_hdr->profile == GST_VC1_PROFILE_ADVANCED) {
GstVC1PicAdvanced *const pic = &frame_hdr->pic.advanced;
if (pic->skipmb)
return 0;
} else {
GstVC1PicSimpleMain *const pic = &frame_hdr->pic.simple;
if (pic->skipmb)
return 0;
}
return (frame_hdr->ptype == GST_VC1_PICTURE_TYPE_P ||
frame_hdr->ptype == GST_VC1_PICTURE_TYPE_B);
}
static inline int
has_DIRECTMB_bitplane (GstVaapiDecoderVC1 * decoder)
{
GstVaapiDecoderVC1Private *const priv = &decoder->priv;
GstVC1SeqHdr *const seq_hdr = &priv->seq_hdr;
GstVC1FrameHdr *const frame_hdr = &priv->frame_hdr;
if (seq_hdr->profile == GST_VC1_PROFILE_ADVANCED) {
GstVC1PicAdvanced *const pic = &frame_hdr->pic.advanced;
if (pic->directmb)
return 0;
} else {
GstVC1PicSimpleMain *const pic = &frame_hdr->pic.simple;
if (pic->directmb)
return 0;
}
return frame_hdr->ptype == GST_VC1_PICTURE_TYPE_B;
}
static inline int
has_ACPRED_bitplane (GstVaapiDecoderVC1 * decoder)
{
GstVaapiDecoderVC1Private *const priv = &decoder->priv;
GstVC1SeqHdr *const seq_hdr = &priv->seq_hdr;
GstVC1FrameHdr *const frame_hdr = &priv->frame_hdr;
GstVC1PicAdvanced *const pic = &frame_hdr->pic.advanced;
if (seq_hdr->profile != GST_VC1_PROFILE_ADVANCED)
return 0;
if (pic->acpred)
return 0;
return (frame_hdr->ptype == GST_VC1_PICTURE_TYPE_I ||
frame_hdr->ptype == GST_VC1_PICTURE_TYPE_BI);
}
static inline int
has_OVERFLAGS_bitplane (GstVaapiDecoderVC1 * decoder)
{
GstVaapiDecoderVC1Private *const priv = &decoder->priv;
GstVC1SeqHdr *const seq_hdr = &priv->seq_hdr;
GstVC1EntryPointHdr *const entrypoint_hdr = &priv->entrypoint_hdr;
GstVC1FrameHdr *const frame_hdr = &priv->frame_hdr;
GstVC1PicAdvanced *const pic = &frame_hdr->pic.advanced;
if (seq_hdr->profile != GST_VC1_PROFILE_ADVANCED)
return 0;
if (pic->overflags)
return 0;
return ((frame_hdr->ptype == GST_VC1_PICTURE_TYPE_I ||
frame_hdr->ptype == GST_VC1_PICTURE_TYPE_BI) &&
(entrypoint_hdr->overlap && frame_hdr->pquant <= 8) &&
pic->condover == GST_VC1_CONDOVER_SELECT);
}
static inline void
pack_bitplanes (GstVaapiBitPlane * bitplane, guint n,
const guint8 * bitplanes[3], guint x, guint y, guint stride)
{
const guint dst_index = n / 2;
const guint src_index = y * stride + x;
guint8 v = 0;
if (bitplanes[0])
v |= bitplanes[0][src_index];
if (bitplanes[1])
v |= bitplanes[1][src_index] << 1;
if (bitplanes[2])
v |= bitplanes[2][src_index] << 2;
bitplane->data[dst_index] = (bitplane->data[dst_index] << 4) | v;
}
static gboolean
fill_picture_structc (GstVaapiDecoderVC1 * decoder, GstVaapiPicture * picture)
{
GstVaapiDecoderVC1Private *const priv = &decoder->priv;
VAPictureParameterBufferVC1 *const pic_param = picture->param;
GstVC1SeqStructC *const structc = &priv->seq_hdr.struct_c;
GstVC1FrameHdr *const frame_hdr = &priv->frame_hdr;
GstVC1PicSimpleMain *const pic = &frame_hdr->pic.simple;
/* Fill in VAPictureParameterBufferVC1 (simple/main profile bits) */
pic_param->sequence_fields.bits.finterpflag = structc->finterpflag;
pic_param->sequence_fields.bits.multires = structc->multires;
pic_param->sequence_fields.bits.overlap = structc->overlap;
pic_param->sequence_fields.bits.syncmarker = structc->syncmarker;
pic_param->sequence_fields.bits.rangered = structc->rangered;
pic_param->sequence_fields.bits.max_b_frames = structc->maxbframes;
pic_param->conditional_overlap_flag = 0; /* advanced profile only */
pic_param->fast_uvmc_flag = structc->fastuvmc;
pic_param->b_picture_fraction = get_BFRACTION (pic->bfraction);
pic_param->cbp_table = pic->cbptab;
pic_param->mb_mode_table = 0; /* XXX: interlaced frame */
pic_param->range_reduction_frame = pic->rangeredfrm;
pic_param->post_processing = 0; /* advanced profile only */
pic_param->picture_resolution_index = pic->respic;
pic_param->luma_scale = pic->lumscale;
pic_param->luma_shift = pic->lumshift;
pic_param->raw_coding.flags.mv_type_mb = pic->mvtypemb;
pic_param->raw_coding.flags.direct_mb = pic->directmb;
pic_param->raw_coding.flags.skip_mb = pic->skipmb;
pic_param->bitplane_present.flags.bp_mv_type_mb =
has_MVTYPEMB_bitplane (decoder);
pic_param->bitplane_present.flags.bp_direct_mb =
has_DIRECTMB_bitplane (decoder);
pic_param->bitplane_present.flags.bp_skip_mb = has_SKIPMB_bitplane (decoder);
pic_param->mv_fields.bits.mv_table = pic->mvtab;
pic_param->mv_fields.bits.extended_mv_flag = structc->extended_mv;
pic_param->mv_fields.bits.extended_mv_range = pic->mvrange;
pic_param->transform_fields.bits.variable_sized_transform_flag =
structc->vstransform;
pic_param->transform_fields.bits.mb_level_transform_type_flag = pic->ttmbf;
pic_param->transform_fields.bits.frame_level_transform_type = pic->ttfrm;
pic_param->transform_fields.bits.transform_ac_codingset_idx2 =
pic->transacfrm2;
/* Refer to 8.3.7 Rounding control for Simple and Main Profile */
if (frame_hdr->ptype == GST_VC1_PICTURE_TYPE_I ||
frame_hdr->ptype == GST_VC1_PICTURE_TYPE_BI)
priv->rndctrl = 1;
else if (frame_hdr->ptype == GST_VC1_PICTURE_TYPE_P)
priv->rndctrl ^= 1;
pic_param->rounding_control = priv->rndctrl;
return TRUE;
}
static gboolean
fill_picture_advanced (GstVaapiDecoderVC1 * decoder, GstVaapiPicture * picture)
{
GstVaapiDecoderVC1Private *const priv = &decoder->priv;
VAPictureParameterBufferVC1 *const pic_param = picture->param;
GstVC1AdvancedSeqHdr *const adv_hdr = &priv->seq_hdr.advanced;
GstVC1EntryPointHdr *const entrypoint_hdr = &priv->entrypoint_hdr;
GstVC1FrameHdr *const frame_hdr = &priv->frame_hdr;
GstVC1PicAdvanced *const pic = &frame_hdr->pic.advanced;
if (!priv->has_entrypoint)
return FALSE;
/* Fill in VAPictureParameterBufferVC1 (advanced profile bits) */
pic_param->sequence_fields.bits.pulldown = adv_hdr->pulldown;
pic_param->sequence_fields.bits.interlace = adv_hdr->interlace;
pic_param->sequence_fields.bits.tfcntrflag = adv_hdr->tfcntrflag;
pic_param->sequence_fields.bits.finterpflag = adv_hdr->finterpflag;
pic_param->sequence_fields.bits.psf = adv_hdr->psf;
pic_param->sequence_fields.bits.overlap = entrypoint_hdr->overlap;
pic_param->entrypoint_fields.bits.broken_link = entrypoint_hdr->broken_link;
pic_param->entrypoint_fields.bits.closed_entry = entrypoint_hdr->closed_entry;
pic_param->entrypoint_fields.bits.panscan_flag = entrypoint_hdr->panscan_flag;
pic_param->entrypoint_fields.bits.loopfilter = entrypoint_hdr->loopfilter;
pic_param->conditional_overlap_flag = pic->condover;
pic_param->fast_uvmc_flag = entrypoint_hdr->fastuvmc;
pic_param->range_mapping_fields.bits.luma_flag =
entrypoint_hdr->range_mapy_flag;
pic_param->range_mapping_fields.bits.luma = entrypoint_hdr->range_mapy;
pic_param->range_mapping_fields.bits.chroma_flag =
entrypoint_hdr->range_mapuv_flag;
pic_param->range_mapping_fields.bits.chroma = entrypoint_hdr->range_mapuv;
pic_param->b_picture_fraction = get_BFRACTION (pic->bfraction);
pic_param->cbp_table = pic->cbptab;
pic_param->mb_mode_table = 0; /* XXX: interlaced frame */
pic_param->range_reduction_frame = 0; /* simple/main profile only */
pic_param->rounding_control = pic->rndctrl;
pic_param->post_processing = pic->postproc;
pic_param->picture_resolution_index = 0; /* simple/main profile only */
pic_param->luma_scale = pic->lumscale;
pic_param->luma_shift = pic->lumshift;
pic_param->picture_fields.bits.frame_coding_mode = pic->fcm;
pic_param->picture_fields.bits.top_field_first = pic->tff;
pic_param->picture_fields.bits.is_first_field = pic->fcm == 0; /* XXX: interlaced frame */
pic_param->picture_fields.bits.intensity_compensation =
pic->mvmode == GST_VC1_MVMODE_INTENSITY_COMP;
pic_param->raw_coding.flags.mv_type_mb = pic->mvtypemb;
pic_param->raw_coding.flags.direct_mb = pic->directmb;
pic_param->raw_coding.flags.skip_mb = pic->skipmb;
pic_param->raw_coding.flags.ac_pred = pic->acpred;
pic_param->raw_coding.flags.overflags = pic->overflags;
pic_param->bitplane_present.flags.bp_mv_type_mb =
has_MVTYPEMB_bitplane (decoder);
pic_param->bitplane_present.flags.bp_direct_mb =
has_DIRECTMB_bitplane (decoder);
pic_param->bitplane_present.flags.bp_skip_mb = has_SKIPMB_bitplane (decoder);
pic_param->bitplane_present.flags.bp_ac_pred = has_ACPRED_bitplane (decoder);
pic_param->bitplane_present.flags.bp_overflags =
has_OVERFLAGS_bitplane (decoder);
pic_param->reference_fields.bits.reference_distance_flag =
entrypoint_hdr->refdist_flag;
pic_param->mv_fields.bits.mv_table = pic->mvtab;
pic_param->mv_fields.bits.extended_mv_flag = entrypoint_hdr->extended_mv;
pic_param->mv_fields.bits.extended_mv_range = pic->mvrange;
pic_param->mv_fields.bits.extended_dmv_flag = entrypoint_hdr->extended_dmv;
pic_param->pic_quantizer_fields.bits.dquant = entrypoint_hdr->dquant;
pic_param->pic_quantizer_fields.bits.quantizer = entrypoint_hdr->quantizer;
pic_param->transform_fields.bits.variable_sized_transform_flag =
entrypoint_hdr->vstransform;
pic_param->transform_fields.bits.mb_level_transform_type_flag = pic->ttmbf;
pic_param->transform_fields.bits.frame_level_transform_type = pic->ttfrm;
pic_param->transform_fields.bits.transform_ac_codingset_idx2 =
pic->transacfrm2;
return TRUE;
}
static gboolean
fill_picture (GstVaapiDecoderVC1 * decoder, GstVaapiPicture * picture)
{
GstVaapiDecoderVC1Private *const priv = &decoder->priv;
VAPictureParameterBufferVC1 *const pic_param = picture->param;
GstVC1SeqHdr *const seq_hdr = &priv->seq_hdr;
GstVC1FrameHdr *const frame_hdr = &priv->frame_hdr;
GstVC1VopDquant *const vopdquant = &frame_hdr->vopdquant;
GstVaapiPicture *prev_picture, *next_picture;
/* Fill in VAPictureParameterBufferVC1 (common fields) */
pic_param->forward_reference_picture = VA_INVALID_ID;
pic_param->backward_reference_picture = VA_INVALID_ID;
pic_param->inloop_decoded_picture = VA_INVALID_ID;
pic_param->sequence_fields.value = 0;
pic_param->sequence_fields.bits.profile = seq_hdr->profile;
pic_param->coded_width = priv->width;
pic_param->coded_height = priv->height;
pic_param->entrypoint_fields.value = 0;
pic_param->range_mapping_fields.value = 0;
pic_param->picture_fields.value = 0;
pic_param->picture_fields.bits.picture_type = get_PTYPE (frame_hdr->ptype);
pic_param->raw_coding.value = 0;
pic_param->bitplane_present.value = 0;
pic_param->reference_fields.value = 0;
pic_param->mv_fields.value = 0;
pic_param->mv_fields.bits.mv_mode = get_MVMODE (frame_hdr);
pic_param->mv_fields.bits.mv_mode2 = get_MVMODE2 (frame_hdr);
pic_param->pic_quantizer_fields.value = 0;
pic_param->pic_quantizer_fields.bits.half_qp = frame_hdr->halfqp;
pic_param->pic_quantizer_fields.bits.pic_quantizer_scale = frame_hdr->pquant;
pic_param->pic_quantizer_fields.bits.pic_quantizer_type =
frame_hdr->pquantizer;
pic_param->pic_quantizer_fields.bits.dq_frame = vopdquant->dquantfrm;
pic_param->pic_quantizer_fields.bits.dq_profile = vopdquant->dqprofile;
pic_param->pic_quantizer_fields.bits.dq_sb_edge =
vopdquant->dqprofile ==
GST_VC1_DQPROFILE_SINGLE_EDGE ? vopdquant->dqbedge : 0;
pic_param->pic_quantizer_fields.bits.dq_db_edge =
vopdquant->dqprofile ==
GST_VC1_DQPROFILE_DOUBLE_EDGES ? vopdquant->dqbedge : 0;
pic_param->pic_quantizer_fields.bits.dq_binary_level = vopdquant->dqbilevel;
pic_param->pic_quantizer_fields.bits.alt_pic_quantizer = vopdquant->altpquant;
pic_param->transform_fields.value = 0;
pic_param->transform_fields.bits.transform_ac_codingset_idx1 =
frame_hdr->transacfrm;
pic_param->transform_fields.bits.intra_transform_dc_table =
frame_hdr->transdctab;
if (seq_hdr->profile == GST_VC1_PROFILE_ADVANCED) {
if (!fill_picture_advanced (decoder, picture))
return FALSE;
} else {
if (!fill_picture_structc (decoder, picture))
return FALSE;
}
gst_vaapi_dpb_get_neighbours (priv->dpb, picture,
&prev_picture, &next_picture);
switch (picture->type) {
case GST_VAAPI_PICTURE_TYPE_B:
if (next_picture)
pic_param->backward_reference_picture = next_picture->surface_id;
if (prev_picture)
pic_param->forward_reference_picture = prev_picture->surface_id;
else if (!priv->closed_entry)
GST_VAAPI_PICTURE_FLAG_SET (picture, GST_VAAPI_PICTURE_FLAG_SKIPPED);
break;
case GST_VAAPI_PICTURE_TYPE_P:
if (prev_picture)
pic_param->forward_reference_picture = prev_picture->surface_id;
break;
default:
break;
}
if (pic_param->bitplane_present.value) {
const guint8 *bitplanes[3];
guint x, y, n;
switch (picture->type) {
case GST_VAAPI_PICTURE_TYPE_P:
bitplanes[0] = pic_param->bitplane_present.flags.bp_direct_mb ?
priv->bitplanes->directmb : NULL;
bitplanes[1] = pic_param->bitplane_present.flags.bp_skip_mb ?
priv->bitplanes->skipmb : NULL;
bitplanes[2] = pic_param->bitplane_present.flags.bp_mv_type_mb ?
priv->bitplanes->mvtypemb : NULL;
break;
case GST_VAAPI_PICTURE_TYPE_B:
bitplanes[0] = pic_param->bitplane_present.flags.bp_direct_mb ?
priv->bitplanes->directmb : NULL;
bitplanes[1] = pic_param->bitplane_present.flags.bp_skip_mb ?
priv->bitplanes->skipmb : NULL;
bitplanes[2] = NULL; /* XXX: interlaced frame (FORWARD plane) */
break;
case GST_VAAPI_PICTURE_TYPE_BI:
case GST_VAAPI_PICTURE_TYPE_I:
bitplanes[0] = NULL; /* XXX: interlaced frame (FIELDTX plane) */
bitplanes[1] = pic_param->bitplane_present.flags.bp_ac_pred ?
priv->bitplanes->acpred : NULL;
bitplanes[2] = pic_param->bitplane_present.flags.bp_overflags ?
priv->bitplanes->overflags : NULL;
break;
default:
bitplanes[0] = NULL;
bitplanes[1] = NULL;
bitplanes[2] = NULL;
break;
}
picture->bitplane = GST_VAAPI_BITPLANE_NEW (decoder,
(seq_hdr->mb_width * seq_hdr->mb_height + 1) / 2);
if (!picture->bitplane)
return FALSE;
n = 0;
for (y = 0; y < seq_hdr->mb_height; y++)
for (x = 0; x < seq_hdr->mb_width; x++, n++)
pack_bitplanes (picture->bitplane, n, bitplanes, x, y,
seq_hdr->mb_stride);
if (n & 1) /* move last nibble to the high order */
picture->bitplane->data[n / 2] <<= 4;
}
return TRUE;
}
static GstVaapiDecoderStatus
decode_slice_chunk (GstVaapiDecoderVC1 * decoder, GstVC1BDU * ebdu,
guint slice_addr, guint header_size)
{
GstVaapiDecoderVC1Private *const priv = &decoder->priv;
GstVaapiPicture *const picture = priv->current_picture;
GstVaapiSlice *slice;
VASliceParameterBufferVC1 *slice_param;
slice = GST_VAAPI_SLICE_NEW (VC1, decoder,
ebdu->data + ebdu->sc_offset,
ebdu->size + ebdu->offset - ebdu->sc_offset);
if (!slice) {
GST_ERROR ("failed to allocate slice");
return GST_VAAPI_DECODER_STATUS_ERROR_ALLOCATION_FAILED;
}
gst_vaapi_picture_add_slice (picture, slice);
/* Fill in VASliceParameterBufferVC1 */
slice_param = slice->param;
slice_param->macroblock_offset = 8 * (ebdu->offset - ebdu->sc_offset) +
header_size;
slice_param->slice_vertical_position = slice_addr;
return GST_VAAPI_DECODER_STATUS_SUCCESS;
}
static GstVaapiDecoderStatus
decode_frame (GstVaapiDecoderVC1 * decoder, GstVC1BDU * rbdu, GstVC1BDU * ebdu)
{
GstVaapiDecoderVC1Private *const priv = &decoder->priv;
GstVC1FrameHdr *const frame_hdr = &priv->frame_hdr;
GstVC1ParserResult result;
GstVaapiPicture *const picture = priv->current_picture;
memset (frame_hdr, 0, sizeof (*frame_hdr));
result = gst_vc1_parse_frame_header (rbdu->data + rbdu->offset,
rbdu->size, frame_hdr, &priv->seq_hdr, priv->bitplanes);
if (result != GST_VC1_PARSER_OK) {
GST_ERROR ("failed to parse frame layer");
return get_status (result);
}
/* @FIXME: intel-driver cannot handle interlaced frames */
if (priv->profile == GST_VAAPI_PROFILE_VC1_ADVANCED
&& frame_hdr->pic.advanced.fcm != GST_VC1_FRAME_PROGRESSIVE) {
GST_ERROR ("interlaced video not supported");
return GST_VAAPI_DECODER_STATUS_ERROR_UNSUPPORTED_PROFILE;
}
switch (frame_hdr->ptype) {
case GST_VC1_PICTURE_TYPE_I:
picture->type = GST_VAAPI_PICTURE_TYPE_I;
GST_VAAPI_PICTURE_FLAG_SET (picture, GST_VAAPI_PICTURE_FLAG_REFERENCE);
break;
case GST_VC1_PICTURE_TYPE_SKIPPED:
case GST_VC1_PICTURE_TYPE_P:
picture->type = GST_VAAPI_PICTURE_TYPE_P;
GST_VAAPI_PICTURE_FLAG_SET (picture, GST_VAAPI_PICTURE_FLAG_REFERENCE);
break;
case GST_VC1_PICTURE_TYPE_B:
picture->type = GST_VAAPI_PICTURE_TYPE_B;
break;
case GST_VC1_PICTURE_TYPE_BI:
picture->type = GST_VAAPI_PICTURE_TYPE_BI;
break;
default:
GST_ERROR ("unsupported picture type %d", frame_hdr->ptype);
return GST_VAAPI_DECODER_STATUS_ERROR_UNKNOWN;
}
/* Update presentation time */
if (GST_VAAPI_PICTURE_IS_REFERENCE (picture)) {
picture->poc = priv->last_non_b_picture ?
(priv->last_non_b_picture->poc + 1) : priv->next_poc;
priv->next_poc = picture->poc + 1;
gst_vaapi_picture_replace (&priv->last_non_b_picture, picture);
} else if (!priv->last_non_b_picture)
picture->poc = priv->next_poc++;
else { /* B or BI */
picture->poc = priv->last_non_b_picture->poc++;
priv->next_poc = priv->last_non_b_picture->poc + 1;
}
picture->pts = GST_VAAPI_DECODER_CODEC_FRAME (decoder)->pts;
if (!fill_picture (decoder, picture))
return GST_VAAPI_DECODER_STATUS_ERROR_UNKNOWN;
return decode_slice_chunk (decoder, ebdu, 0, frame_hdr->header_size);
}
static GstVaapiDecoderStatus
decode_slice (GstVaapiDecoderVC1 * decoder, GstVC1BDU * rbdu, GstVC1BDU * ebdu)
{
GstVaapiDecoderVC1Private *const priv = &decoder->priv;
GstVC1SliceHdr slice_hdr;
GstVC1ParserResult result;
memset (&slice_hdr, 0, sizeof (slice_hdr));
result = gst_vc1_parse_slice_header (rbdu->data + rbdu->offset,
rbdu->size, &slice_hdr, &priv->seq_hdr);
if (result != GST_VC1_PARSER_OK) {
GST_ERROR ("failed to parse slice layer");
return get_status (result);
}
return decode_slice_chunk (decoder, ebdu, slice_hdr.slice_addr,
slice_hdr.header_size);
}
static gboolean
decode_rbdu (GstVaapiDecoderVC1 * decoder, GstVC1BDU * rbdu, GstVC1BDU * ebdu)
{
GstVaapiDecoderVC1Private *const priv = &decoder->priv;
guint8 *rbdu_buffer;
guint i, j, rbdu_buffer_size;
/* BDU are encapsulated in advanced profile mode only */
if (priv->profile != GST_VAAPI_PROFILE_VC1_ADVANCED) {
memcpy (rbdu, ebdu, sizeof (*rbdu));
return TRUE;
}
/* Reallocate unescaped bitstream buffer */
rbdu_buffer = priv->rbdu_buffer;
if (!rbdu_buffer || ebdu->size > priv->rbdu_buffer_size) {
rbdu_buffer = g_realloc (priv->rbdu_buffer, ebdu->size);
if (!rbdu_buffer)
return FALSE;
priv->rbdu_buffer = rbdu_buffer;
priv->rbdu_buffer_size = ebdu->size;
}
/* Unescape bitstream buffer */
if (ebdu->size < 4) {
memcpy (rbdu_buffer, ebdu->data + ebdu->offset, ebdu->size);
rbdu_buffer_size = ebdu->size;
} else {
guint8 *const bdu_buffer = ebdu->data + ebdu->offset;
for (i = 0, j = 0; i < ebdu->size; i++) {
if (i >= 2 && i < ebdu->size - 1 &&
bdu_buffer[i - 1] == 0x00 &&
bdu_buffer[i - 2] == 0x00 &&
bdu_buffer[i] == 0x03 && bdu_buffer[i + 1] <= 0x03)
i++;
rbdu_buffer[j++] = bdu_buffer[i];
}
rbdu_buffer_size = j;
}
/* Reconstruct RBDU */
rbdu->type = ebdu->type;
rbdu->size = rbdu_buffer_size;
rbdu->sc_offset = 0;
rbdu->offset = 0;
rbdu->data = rbdu_buffer;
return TRUE;
}
static GstVaapiDecoderStatus
decode_ebdu (GstVaapiDecoderVC1 * decoder, GstVC1BDU * ebdu)
{
GstVaapiDecoderStatus status;
GstVC1BDU rbdu;
if (!decode_rbdu (decoder, &rbdu, ebdu))
return GST_VAAPI_DECODER_STATUS_ERROR_ALLOCATION_FAILED;
switch (ebdu->type) {
case GST_VC1_SEQUENCE:
status = decode_sequence (decoder, &rbdu, ebdu);
break;
case GST_VC1_ENTRYPOINT:
status = decode_entry_point (decoder, &rbdu, ebdu);
break;
case GST_VC1_FRAME:
status = decode_frame (decoder, &rbdu, ebdu);
break;
case GST_VC1_SLICE:
status = decode_slice (decoder, &rbdu, ebdu);
break;
case GST_VC1_END_OF_SEQ:
status = decode_sequence_end (decoder);
break;
case GST_VC1_FIELD_USER:
case GST_VC1_FRAME_USER:
case GST_VC1_ENTRY_POINT_USER:
case GST_VC1_SEQUENCE_USER:
/* Let's just ignore them */
status = GST_VAAPI_DECODER_STATUS_SUCCESS;
break;
default:
GST_WARNING ("unsupported BDU type %d", ebdu->type);
status = GST_VAAPI_DECODER_STATUS_ERROR_BITSTREAM_PARSER;
break;
}
return status;
}
static GstVaapiDecoderStatus
decode_buffer (GstVaapiDecoderVC1 * decoder, guchar * buf, guint buf_size)
{
GstVaapiDecoderVC1Private *const priv = &decoder->priv;
GstVC1BDU ebdu;
if (priv->has_codec_data) {
ebdu.type = GST_VC1_FRAME;
ebdu.sc_offset = 0;
ebdu.offset = 0;
} else {
ebdu.type = buf[3];
ebdu.sc_offset = 0;
ebdu.offset = 4;
}
ebdu.data = buf;
ebdu.size = buf_size - ebdu.offset;
return decode_ebdu (decoder, &ebdu);
}
static GstVaapiDecoderStatus
gst_vaapi_decoder_vc1_decode_codec_data (GstVaapiDecoder * base_decoder,
const guchar * buf, guint buf_size)
{
GstVaapiDecoderVC1 *const decoder = GST_VAAPI_DECODER_VC1_CAST (base_decoder);
GstVaapiDecoderVC1Private *const priv = &decoder->priv;
GstVC1SeqHdr *const seq_hdr = &priv->seq_hdr;
GstVaapiDecoderStatus status;
GstVC1ParserResult result;
GstVC1BDU ebdu;
GstCaps *caps;
GstStructure *structure;
guint ofs;
gint width, height;
guint32 format;
gint version;
const gchar *s;
priv->has_codec_data = TRUE;
width = GST_VAAPI_DECODER_WIDTH (decoder);
height = GST_VAAPI_DECODER_HEIGHT (decoder);
if (!width || !height) {
GST_ERROR ("failed to parse size from codec-data");
return GST_VAAPI_DECODER_STATUS_ERROR_UNKNOWN;
}
caps = GST_VAAPI_DECODER_CODEC_STATE (decoder)->caps;
structure = gst_caps_get_structure (caps, 0);
s = gst_structure_get_string (structure, "format");
if (s && strlen (s) == 4) {
format = GST_MAKE_FOURCC (s[0], s[1], s[2], s[3]);
} else {
/* Try to determine format from "wmvversion" property */
if (gst_structure_get_int (structure, "wmvversion", &version))
format = (version >= 1 && version <= 3) ?
GST_MAKE_FOURCC ('W', 'M', 'V', ('0' + version)) : 0;
else
format = 0;
}
if (!format) {
GST_ERROR ("failed to parse profile from codec-data");
return GST_VAAPI_DECODER_STATUS_ERROR_UNSUPPORTED_CODEC;
}
/* WMV3 -- expecting sequence header */
if (format == GST_MAKE_FOURCC ('W', 'M', 'V', '3')) {
seq_hdr->struct_c.coded_width = width;
seq_hdr->struct_c.coded_height = height;
ebdu.type = GST_VC1_SEQUENCE;
ebdu.size = buf_size;
ebdu.sc_offset = 0;
ebdu.offset = 0;
ebdu.data = (guint8 *) buf;
return decode_ebdu (decoder, &ebdu);
}
/* WVC1 -- expecting bitstream data units */
if (format != GST_MAKE_FOURCC ('W', 'V', 'C', '1'))
return GST_VAAPI_DECODER_STATUS_ERROR_UNSUPPORTED_PROFILE;
seq_hdr->advanced.max_coded_width = width;
seq_hdr->advanced.max_coded_height = height;
ofs = 0;
do {
result = gst_vc1_identify_next_bdu (buf + ofs, buf_size - ofs, &ebdu);
switch (result) {
case GST_VC1_PARSER_NO_BDU_END:
/* Assume the EBDU is complete within codec-data bounds */
ebdu.size = buf_size - ofs - ebdu.offset;
// fall-through
case GST_VC1_PARSER_OK:
status = decode_ebdu (decoder, &ebdu);
ofs += ebdu.offset + ebdu.size;
break;
default:
status = get_status (result);
break;
}
} while (status == GST_VAAPI_DECODER_STATUS_SUCCESS && ofs < buf_size);
return status;
}
static GstVaapiDecoderStatus
ensure_decoder (GstVaapiDecoderVC1 * decoder)
{
GstVaapiDecoderVC1Private *const priv = &decoder->priv;
GstVaapiDecoderStatus status;
if (!priv->is_opened) {
priv->is_opened = gst_vaapi_decoder_vc1_open (decoder);
if (!priv->is_opened)
return GST_VAAPI_DECODER_STATUS_ERROR_UNSUPPORTED_CODEC;
status =
gst_vaapi_decoder_decode_codec_data (GST_VAAPI_DECODER_CAST (decoder));
if (status != GST_VAAPI_DECODER_STATUS_SUCCESS)
return status;
}
return GST_VAAPI_DECODER_STATUS_SUCCESS;
}
static inline gint
scan_for_start_code (GstAdapter * adapter, guint ofs, guint size, guint32 * scp)
{
return (gint) gst_adapter_masked_scan_uint32_peek (adapter,
0xffffff00, 0x00000100, ofs, size, scp);
}
static GstVaapiDecoderStatus
gst_vaapi_decoder_vc1_parse (GstVaapiDecoder * base_decoder,
GstAdapter * adapter, gboolean at_eos, GstVaapiDecoderUnit * unit)
{
GstVaapiDecoderVC1 *const decoder = GST_VAAPI_DECODER_VC1_CAST (base_decoder);
GstVaapiDecoderVC1Private *const priv = &decoder->priv;
GstVaapiDecoderStatus status;
guint8 bdu_type;
guint size, buf_size, flags = 0;
gint ofs;
status = ensure_decoder (decoder);
if (status != GST_VAAPI_DECODER_STATUS_SUCCESS)
return status;
size = gst_adapter_available (adapter);
if (priv->has_codec_data) {
// Assume demuxer sends out plain frames
if (size < 1)
return GST_VAAPI_DECODER_STATUS_ERROR_NO_DATA;
buf_size = size;
bdu_type = GST_VC1_FRAME;
} else {
if (size < 4)
return GST_VAAPI_DECODER_STATUS_ERROR_NO_DATA;
ofs = scan_for_start_code (adapter, 0, size, NULL);
if (ofs < 0)
return GST_VAAPI_DECODER_STATUS_ERROR_NO_DATA;
gst_adapter_flush (adapter, ofs);
size -= ofs;
ofs = G_UNLIKELY (size < 8) ? -1 :
scan_for_start_code (adapter, 4, size - 4, NULL);
if (ofs < 0) {
// Assume the whole packet is present if end-of-stream
if (!at_eos)
return GST_VAAPI_DECODER_STATUS_ERROR_NO_DATA;
ofs = size;
}
buf_size = ofs;
gst_adapter_copy (adapter, &bdu_type, 3, 1);
}
unit->size = buf_size;
/* Check for new picture layer */
switch (bdu_type) {
case GST_VC1_END_OF_SEQ:
flags |= GST_VAAPI_DECODER_UNIT_FLAG_FRAME_END;
flags |= GST_VAAPI_DECODER_UNIT_FLAG_STREAM_END;
break;
case GST_VC1_SEQUENCE:
case GST_VC1_ENTRYPOINT:
flags |= GST_VAAPI_DECODER_UNIT_FLAG_FRAME_START;
break;
case GST_VC1_FRAME:
flags |= GST_VAAPI_DECODER_UNIT_FLAG_FRAME_START;
flags |= GST_VAAPI_DECODER_UNIT_FLAG_SLICE;
break;
case GST_VC1_SLICE:
flags |= GST_VAAPI_DECODER_UNIT_FLAG_SLICE;
break;
case GST_VC1_FIELD:
/* @FIXME: intel-driver cannot handle interlaced frames */
GST_ERROR ("interlaced video not supported");
return GST_VAAPI_DECODER_STATUS_ERROR_UNSUPPORTED_PROFILE;
}
GST_VAAPI_DECODER_UNIT_FLAG_SET (unit, flags);
return GST_VAAPI_DECODER_STATUS_SUCCESS;
}
static GstVaapiDecoderStatus
gst_vaapi_decoder_vc1_decode (GstVaapiDecoder * base_decoder,
GstVaapiDecoderUnit * unit)
{
GstVaapiDecoderVC1 *const decoder = GST_VAAPI_DECODER_VC1_CAST (base_decoder);
GstVaapiDecoderStatus status;
GstBuffer *const buffer =
GST_VAAPI_DECODER_CODEC_FRAME (decoder)->input_buffer;
GstMapInfo map_info;
status = ensure_decoder (decoder);
if (status != GST_VAAPI_DECODER_STATUS_SUCCESS)
return status;
if (!gst_buffer_map (buffer, &map_info, GST_MAP_READ)) {
GST_ERROR ("failed to map buffer");
return GST_VAAPI_DECODER_STATUS_ERROR_UNKNOWN;
}
status = decode_buffer (decoder, map_info.data + unit->offset, unit->size);
gst_buffer_unmap (buffer, &map_info);
if (status != GST_VAAPI_DECODER_STATUS_SUCCESS)
return status;
return GST_VAAPI_DECODER_STATUS_SUCCESS;
}
static GstVaapiDecoderStatus
gst_vaapi_decoder_vc1_start_frame (GstVaapiDecoder * base_decoder,
GstVaapiDecoderUnit * unit)
{
GstVaapiDecoderVC1 *const decoder = GST_VAAPI_DECODER_VC1_CAST (base_decoder);
GstVaapiDecoderVC1Private *const priv = &decoder->priv;
GstVaapiDecoderStatus status;
GstVaapiPicture *picture;
status = ensure_context (decoder);
if (status != GST_VAAPI_DECODER_STATUS_SUCCESS) {
GST_ERROR ("failed to reset context");
return status;
}
status = ensure_decoder (decoder);
if (status != GST_VAAPI_DECODER_STATUS_SUCCESS)
return status;
picture = GST_VAAPI_PICTURE_NEW (VC1, decoder);
if (!picture) {
GST_ERROR ("failed to allocate picture");
return GST_VAAPI_DECODER_STATUS_ERROR_ALLOCATION_FAILED;
}
gst_vaapi_picture_replace (&priv->current_picture, picture);
gst_vaapi_picture_unref (picture);
/* Update cropping rectangle */
do {
GstVC1AdvancedSeqHdr *adv_hdr;
GstVaapiRectangle crop_rect;
if (priv->profile != GST_VAAPI_PROFILE_VC1_ADVANCED)
break;
adv_hdr = &priv->seq_hdr.advanced;
if (!adv_hdr->display_ext)
break;
crop_rect.x = 0;
crop_rect.y = 0;
crop_rect.width = adv_hdr->disp_horiz_size;
crop_rect.height = adv_hdr->disp_vert_size;
if (crop_rect.width <= priv->width && crop_rect.height <= priv->height)
gst_vaapi_picture_set_crop_rect (picture, &crop_rect);
} while (0);
if (!gst_vc1_bitplanes_ensure_size (priv->bitplanes, &priv->seq_hdr)) {
GST_ERROR ("failed to allocate bitplanes");
return GST_VAAPI_DECODER_STATUS_ERROR_ALLOCATION_FAILED;
}
return GST_VAAPI_DECODER_STATUS_SUCCESS;
}
static GstVaapiDecoderStatus
gst_vaapi_decoder_vc1_end_frame (GstVaapiDecoder * base_decoder)
{
GstVaapiDecoderVC1 *const decoder = GST_VAAPI_DECODER_VC1_CAST (base_decoder);
return decode_current_picture (decoder);
}
static GstVaapiDecoderStatus
gst_vaapi_decoder_vc1_flush (GstVaapiDecoder * base_decoder)
{
GstVaapiDecoderVC1 *const decoder = GST_VAAPI_DECODER_VC1_CAST (base_decoder);
GstVaapiDecoderVC1Private *const priv = &decoder->priv;
if (priv->is_opened)
gst_vaapi_dpb_flush (priv->dpb);
return GST_VAAPI_DECODER_STATUS_SUCCESS;
}
static void
gst_vaapi_decoder_vc1_finalize (GObject * object)
{
GstVaapiDecoder *const base_decoder = GST_VAAPI_DECODER (object);
gst_vaapi_decoder_vc1_destroy (base_decoder);
G_OBJECT_CLASS (gst_vaapi_decoder_vc1_parent_class)->finalize (object);
}
static void
gst_vaapi_decoder_vc1_class_init (GstVaapiDecoderVC1Class * klass)
{
GObjectClass *const object_class = G_OBJECT_CLASS (klass);
GstVaapiDecoderClass *const decoder_class = GST_VAAPI_DECODER_CLASS (klass);
object_class->finalize = gst_vaapi_decoder_vc1_finalize;
decoder_class->reset = gst_vaapi_decoder_vc1_reset;
decoder_class->parse = gst_vaapi_decoder_vc1_parse;
decoder_class->decode = gst_vaapi_decoder_vc1_decode;
decoder_class->start_frame = gst_vaapi_decoder_vc1_start_frame;
decoder_class->end_frame = gst_vaapi_decoder_vc1_end_frame;
decoder_class->flush = gst_vaapi_decoder_vc1_flush;
decoder_class->decode_codec_data = gst_vaapi_decoder_vc1_decode_codec_data;
}
static void
gst_vaapi_decoder_vc1_init (GstVaapiDecoderVC1 * decoder)
{
GstVaapiDecoder *const base_decoder = GST_VAAPI_DECODER (decoder);
gst_vaapi_decoder_vc1_create (base_decoder);
}
/**
* gst_vaapi_decoder_vc1_new:
* @display: a #GstVaapiDisplay
* @caps: a #GstCaps holding codec information
*
* Creates a new #GstVaapiDecoder for VC-1 decoding. The @caps can
* hold extra information like codec-data and pictured coded size.
*
* Return value: the newly allocated #GstVaapiDecoder object
*/
GstVaapiDecoder *
gst_vaapi_decoder_vc1_new (GstVaapiDisplay * display, GstCaps * caps)
{
return g_object_new (GST_TYPE_VAAPI_DECODER_VC1, "display", display,
"caps", caps, NULL);
}
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